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Effect of Ca on microwave properties of strontium manganite synthesized by microwave processing

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Abstract

Nanostructured Sr1−xCa x MnO3 was prepared by oxalic precursor method and sintered using microwave process. The pervoskite structure was confirmed by x-ray diffraction. The complex permittivity and permeability with calcium concentration were measured by VSWR in the frequency range 8–12 GHz. We present the frequency dependence of microwave absorbing properties of Sr1−xCa x MnO3 (0 ≤ x ≤ 0.4) powders at room temperature which is correlated to the value of its complex permittivity and permeability. The composition dependent microwave absorption was observed and it increased with Ca concentration from 47% to 68% at 9.7 GHz. The excellent microwave absorption properties were attributed to a better electromagnetic impedance match and a higher electric resistivity.

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Authors and Affiliations

  1. Thick and Thin Film Device Lab, Department of Physics, Shivaji University, Kolhapur, 416004, India

    Rani P. Pawar, Rupali N. Jadhav & Vijaya Puri

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  1. Rani P. Pawar
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  2. Rupali N. Jadhav
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  3. Vijaya Puri
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Correspondence to Vijaya Puri.

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Pawar, R.P., Jadhav, R.N. & Puri, V. Effect of Ca on microwave properties of strontium manganite synthesized by microwave processing. Electron. Mater. Lett. 8, 321–324 (2012). https://doi.org/10.1007/s13391-012-2008-z

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  • DOI: https://doi.org/10.1007/s13391-012-2008-z

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